266 T.IMEHRI. 
found in this region. This order of birds is charac- 
terised by the length and nature of the legs. The legs 
are always long, and the lower part (corresponding to the 
shin-bones in man) that is usually covered with feathers in 
other orders, remains bare for a great portion of its length. 
The toes also are very long, and are but slightly, if at all, 
webbed. Of peculiar groups which are exhibited in the 
second upright case, such forms may be mentioned as the 
beautiful sun-bittern (Eurypyga) , the tiger-bitterns (Tigri- 
soma) , the black-crested and curious boat-bill (Cancroma) y 
the spur-winged and horned screamer (Palamedea), and 
the lovely trumpeter (Psophia) ; while there are also shown 
beautiful white egrets and the graceful and handsome ash- 
necked heron and other species of Ardea, the brilliant 
scarlet Ibis, the pelican-stork (Tantalus), the long-toed 
spur-wing (Parr a) , together with various forms of plovers, 
etc. No mounted specimen of the negrocop or jabiru 
(Mycteria) is yet in the collection, though two heads 
of this bird, shewing the special form of the bill, are 
suspended from the side behind the case. 
Of the order of the Anseres or web-footed birds, forms 
characterised by the toes being completely connefted 
by a membrane, many specimens are shown, such as the 
curious scissor-bill (Rhynchops)^ the tern or sea-swallow 
(Sterna), the long-necked and long-bodied darter 
(P lotus), the common booby (Sula), the large-billed 
and pouched pelican (Pelecanus) and others. These 
form the Natatores, or swimming birds, of the old systems. 
Of the tenth and last order of birds, the Struthiones 
or running birds, such as the ostrich and emeu, to which 
reference has already been made, no forms occur in 
Guiana — the only American representative, the Rhea, 
